galbrun



(No Model.)

G L GALBRUN PROPELLING MECHANISM.

No. 602,440. Patented Apr. 19, 1898.

WITNESSES:

Erich,

ATENT GUSTAVE LI GALBRUN, on NEW YORK, N. Y.

PROPELLING MECHANlSNl.

SPECIFICATION forming part of Letters Patent No. 602,440, dated April19, 1898.

Application filed April 29, 1897. Serial No. 634,489. (No model.)

To all whom, it natty concern:

Beitknown that I, GUSTAVE L. GALBRUN, a citizen of France, and aresident of New York city, county of New York, and State of New York,have invented certain new and useful Improvements in PropellingMechanism, of which the following is a specification, reference beinghad to the accompanying drawings, forming a part thereof, in whichsimilar letters of reference indicate corresponding parts.

This invention relates to hand or foot power propelling mechanism forsmall boats; and it has for its object to provide a simple and improvedpropeller mechanism of this class which will possess advantages in pointof convenience, ease of operation, maximum speed, and generalefficiency.

In the drawings, Figure l is a side elevation of a boat provided withmyimproved propelling mechanism, parts being broken away to show theinterior construction and arrangement. Fig. 2 is a top or plan view.Fig. 3 is a vertical transverse sectional view taken on the line 3 3,Fig. 1.

Referring to the drawings, A designates the hull of the boat, which isprovided with a propeller'shaft 13, carrying the propeller 5. Adjacentto the propeller mechanism is provided a seat 0.

The framework embodied in my improved propeller mechanism preferablycomprises an upright standard D, rising from the bottom of the boat andarranged in a convenient position with relation to the seat 0. Thissingle upright standard will form the complete carrying-frame of thepropeller mechanism, the front end of the propeller-shaft preferablyhaving a hearing, as at b, in the lower portion of the standard.

Mounted upon the propeller shaft is a sprocket-wheel E, connected byverticallyextended sprocket-chain f with a sprocket drive-wheel G,arranged above the sprocketwheel E on a corresponding transverse planewith relation to the seat 0 and having a bearing at the top of theupright standard D.

In relative gearing of the sprocket-wheels the top drive-wheel G is oflarger diameter than the propeller-shaft wheel E to multiply therevolutions of the shaft with relation to the revolutions of thedrive-wheel. The drivewheel is provided with a handle or crank g,projecting toward the seat 0, as shown.

In the operation of the foregoing mechanism a person seated in the seat0 may conveniently grasp the handle g of the drive-wheel, and by therotation of, the latter the propeller-shaft will be turned at a highrelative speed. To provide for the simultaneous or alternative operationof the mechanism with the feet and hands, I provide a pedal mechanismconnected with the hand driving mechanism hereinbefore described. Inthis connection the drive-wheel G is carried upon a sh aft g, providedat its end opposite the drivewheel with a treadle crank-arm g to thecranks of which are respectively connected, at opposite sides, pitmen HH, pivotally jointed, as shown at h, to permit the requisite lateralplay and having their lower ends connected to the front ends of treadlesI I, which treadles project toward the seat 0 and have their rear endshinged or pivoted, as at i, to the bottom or framework of the boat.

The operation and advantages of my invention will be readilyunderstood.The propeller-shaft may be rotated by either the hand mechanism,embodying the sprocketgears and connecting-chain, or by the footmechanism, embodying the treadles and their connection with the cranksupon the shaft of the sprocket drive-wheel. r

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is

'1. Animproved propeller mechanism of the class described, comprisingtheupright standard or framework, the propeller-shaft carrying a sprocketwheel or gear, a sprocket drivewheel or gear carried upon a shaftmounted at the top of the upright standard or framework, said shaftbeing provided with an opposite end crank, asprocket-chain or connectingmechanism extending between the gears, pitmen connected with the crankend of the drive -wheel shaft, and treadles extending from said pitmenrearwardly at each'side the driving-gear mechanism, substantially as andfor the purpose set forth.

2. An improved propeller mechanism of the class described, comprisingthe upright standard, the propeller-shaft having its front end bearingin the lower portion of said standard and provided with aspr0cket-wheel, a sprocket drive-wheel mounted upon a shaft bearing onthe top of the standard and provided with a rearwardly-proj ectingcrank-arm or handle, the shaft of said drive-Wheel being provided With apedal-crank at its front end, a sprocket-chain connecting said gears,the pitrnen respectively connected to said cranks at each side themechanism and pivotally jointed, and the treadles connected with thepitmen and extending rearwardlyat each side the driving mechanism,substantially as and for the purpose set forth.

In testimony that I claim the foregoing as my invention I have signed myname, in pres- I 5 ence of two witnesses, this 19th day of April, 1897.

GUSTAVE L. GALBRUN.

Vitnesses:

O. SEDGWICK, ,M. G. MAQLEAN.

